The Collaborative International Dictionary
Diplostemonous
Diplostemonous \Dip`lo*stem"o*nous\, a. [Gr. ? double + ? the
warp, a thread.] (Bot.)
Having twice as many stamens as petals, as the geranium.
--R.
Brown.
Wiktionary
diplostemonous
a. 1 (context botany English) Having twice as many stamens as petals in two whorls, the inner aligned with the petals. 2 (context botany uncommon English) Having twice as many stamens as petals.